Initial work for G-code sender and more intensive usage of Boost

xs/include/boost/mpl/is_sequence.hpp

@@ -0,0 +1,112 @@
+
+#ifndef BOOST_MPL_IS_SEQUENCE_HPP_INCLUDED
+#define BOOST_MPL_IS_SEQUENCE_HPP_INCLUDED
+
+// Copyright Aleksey Gurtovoy 2002-2004
+//
+// Distributed under the Boost Software License, Version 1.0. 
+// (See accompanying file LICENSE_1_0.txt or copy at 
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+// See http://www.boost.org/libs/mpl for documentation.
+
+// $Id: is_sequence.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
+// $Date: 2008-10-10 23:19:02 -0700 (Fri, 10 Oct 2008) $
+// $Revision: 49267 $
+
+#include <boost/mpl/not.hpp>
+#include <boost/mpl/and.hpp>
+#include <boost/mpl/begin_end.hpp>
+#include <boost/mpl/if.hpp>
+#include <boost/mpl/bool.hpp>
+#include <boost/mpl/sequence_tag_fwd.hpp>
+#include <boost/mpl/identity.hpp>
+#include <boost/mpl/void.hpp>
+#include <boost/mpl/aux_/has_tag.hpp>
+#include <boost/mpl/aux_/has_begin.hpp>
+#include <boost/mpl/aux_/na_spec.hpp>
+#include <boost/mpl/aux_/lambda_support.hpp>
+#include <boost/mpl/aux_/config/eti.hpp>
+#include <boost/mpl/aux_/config/msvc.hpp>
+#include <boost/mpl/aux_/config/workaround.hpp>
+#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+#   include <boost/mpl/aux_/msvc_is_class.hpp>
+#elif BOOST_WORKAROUND(BOOST_MSVC, == 1300)
+#   include <boost/type_traits/is_class.hpp>
+#endif
+
+#include <boost/type_traits/is_same.hpp>
+
+namespace boost { namespace mpl {
+
+#if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
+
+namespace aux {
+
+// agurt, 11/jun/03: 
+// MSVC 6.5/7.0 fails if 'has_begin' is instantiated on a class type that has a
+// 'begin' member that doesn't name a type; e.g. 'has_begin< std::vector<int> >'
+// would fail; requiring 'T' to have _both_ 'tag' and 'begin' members workarounds
+// the issue for most real-world cases
+template< typename T > struct is_sequence_impl
+    : and_<
+          identity< aux::has_tag<T> >
+        , identity< aux::has_begin<T> >
+        >
+{
+};
+
+} // namespace aux
+        
+template<
+      typename BOOST_MPL_AUX_NA_PARAM(T)
+    >
+struct is_sequence
+    : if_<
+#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+          aux::msvc_is_class<T> 
+#else
+          boost::is_class<T> 
+#endif
+        , aux::is_sequence_impl<T>
+        , bool_<false>
+        >::type
+{
+    BOOST_MPL_AUX_LAMBDA_SUPPORT(1, is_sequence, (T))
+};
+
+#elif defined(BOOST_MPL_CFG_NO_HAS_XXX)
+
+template<
+      typename BOOST_MPL_AUX_NA_PARAM(T)
+    >
+struct is_sequence
+    : bool_<false>
+{
+};
+
+#else
+
+template<
+      typename BOOST_MPL_AUX_NA_PARAM(T)
+    >
+struct is_sequence
+    : not_< is_same< typename begin<T>::type, void_ > >
+{
+    BOOST_MPL_AUX_LAMBDA_SUPPORT(1, is_sequence, (T))
+};
+
+#endif // BOOST_MSVC
+
+#if defined(BOOST_MPL_CFG_MSVC_60_ETI_BUG)
+template<> struct is_sequence<int>
+    : bool_<false>
+{
+};
+#endif
+
+BOOST_MPL_AUX_NA_SPEC_NO_ETI(1, is_sequence)
+
+}}
+
+#endif // BOOST_MPL_IS_SEQUENCE_HPP_INCLUDED